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Title of patent family (most common patent title) |
Family members |
Filing year |
---|---|---|
method for expanding seamless steel pipe in a pulling-drawing way and lifting and rotati… 🛈 | 2 | 2009 |
low-alloy-steel seamless steel tube for nuclear power and production method thereof | 2 | 2012 |
circular tube billet hot centering machine | 2 | 2012 |
bidirectional hot centering machine for round pipe billets | 2 | 2012 |
mid-carbon, nickel, chromium, molybdenum and vanadium alloy steel seamless tube and prod… 🛈 | 2 | 2012 |
method for preventing heat treatment ellipse becoming of large-diameter seamless steel p… 🛈 | 2 | 2014 |
nuclear power-used low-temperature seamless steel tube and production method therefore | 2 | 2012 |
carbon steel seamless steel tube for nuclear power and production method thereof | 2 | 2012 |
excellent 60 or 65 carbon steel wire rod containing residual vanadium and production pro… 🛈 | 2 | 2014 |
titanium alloy seamless pipe finishing method | 2 | 2014 |